ES2794651T3 - Dispensing head and nozzle arrangement - Google Patents

Abstract

Nozzle arrangement (10) for preferably fan-type atomization of a fluid (3), in particular oil, where the nozzle arrangement (10) has a channel (18) for the fluid (3), where the channel (18 ) presents a first channel section (21) and a second channel section (22) that connects with the first channel section (21) in the direction of flow (S) of the fluid (3), where the first section of channel (21) converges in the direction of flow (S) of the fluid (3), where it narrows in the direction of flow (S) of the fluid (3) of slit type or forming an oblong flow cross section (Q), where the second channel section (22) is oblong or slit-like shaped in cross section and is bounded by two oblong side surfaces (26) and two short leg surfaces (27), where the leg surfaces (27) are inclined with respect to the flow direction (S) or a longitudinal axis (L) of the channel (18), characterized in that the longitudinal extent of the flow cross section (Q) of the first channel section (21) smaller or adjacent to the second channel section (22) is arranged transversely to the longitudinal extent of the flow cross section (Q) of the second smaller channel section (22) or adjacent to the first channel section (21).

Description

DESCRIPTION

Dispensing head and nozzle arrangement

The present invention relates to a nozzle arrangement for preferably fan-type spraying of a fluid, in particular oil, according to the preamble of claim 1, a dispensing head for dispensing a fluid, in particular oil, according to the preamble of claim 10, as well as the use of a nozzle arrangement for preferably fan-type atomization of a fluid, in particular oil, according to claim 11.

The term "dispensing head" should preferably be understood as a constructive device, which is configured in particular to dispense a fluid, in particular an oil, such as olive oil, in particular to atomize it or to convert it into an aerosol. The dispensing head is preferably located or can be placed in a container as a reservoir for a fluid to be atomized. Especially preferably, the dispensing head is configured for the emission or dispensing with dispensing of a fluid, in particular oil. However, the dispensing head can also be configured as a metering pump or hand-operated pump or any other dispensing device.

The term "fluid" should preferably be understood as liquids, suspensions and / or emulsions, possibly with gaseous phases. In particular, vinegars and / or oils are fluids in the sense of the present invention, which are preferably suitable for consumption, for example as dressings. However, the term "fluid" can preferably be understood and interpreted broadly.

The term "nozzle arrangement" should preferably be understood as a constructive device, in particular a dispensing head, in particular where the nozzle arrangement is configured to atomize a fluid, preferably of the fan type. A nozzle arrangement in the sense of the present invention preferably has at least one flow channel or channel for the fluid, preferably where the nozzle arrangement or channel is configured such that the fluid can be atomized or aerosolized.

In the present invention, the term "aerosol" should preferably be understood as a cloud-like or mist-like accumulation of a plurality of drops of a fluid atomized preferably by means of a dispensing head or a nozzle arrangement, preferably where the drops have a low speed and / or at least essentially undirected directions of movement. An "aerosol" can present or form, for example, a flat, conical and / or fan-like cloud of drops, in particular where the main widening direction or flow direction of the cloud of drops corresponds at least essentially to the Main outlet direction or outlet pulse direction of the dispensing head or nozzle arrangement.

Document WO 00/55543 discloses a device with a nozzle, where the nozzle has a distributor, in order to generate a flat and fan-shaped jet of an atomized fluid. The nozzle has a nozzle channel with a first narrowing channel section and a widening second channel section.

Document EP 1886731 B1 discloses a spray nozzle arrangement for spraying a medium with a nozzle channel, where the nozzle channel has a first narrowing channel section and a second channel section, where the first channel section is fluidly connected to the second channel section through a through opening. The second channel section has two opposite lateral surfaces, which move away from the passage opening with increasing distance, where the lateral surfaces are limited by two limitation surfaces arranged perpendicular to the plane of the passage opening, which have a lateral distance of the passage opening.

The present invention has the object of specifying an improved nozzle arrangement, as well as a dispensing head with an improved nozzle arrangement, preferably where a particularly efficient dispensing and / or atomization of a fluid, in particular of an oil, is permitted or favored , and / or a simple mounting of the nozzle arrangement and / or a uniform spray image is generated, preferably of the fan type.

The above object is achieved by a nozzle arrangement according to claim 1, a dispensing head according to claim 10 or a use of a nozzle arrangement according to claim 11. Advantageous developments are the subject of the dependent claims.

The nozzle arrangement according to the invention has a channel for a fluid, where the channel has a first channel section and a second channel section, which connects with the first channel section in the flow direction. The first and second channel sections are fluidly connected to each other via a through opening.

In this regard, the first channel section converges in the fluid flow direction or the flow cross section of the first channel section decreases in the fluid flow direction. In this regard, the first channel section narrows in the fluid flow direction forming a gap or slit.

In this regard, the second channel section is oblong or slit-like shaped in cross section or transversely to the fluid flow direction and is bounded by two side surfaces and two surfaces short legs, particularly where the second channel section diverges in the direction of flow.

One aspect of the present invention is that the leg surfaces of the second channel section are arranged inclined or obliquely relative to the direction of flow or a longitudinal axis of the channel. In this way, a very uniform spray image is generated, which is at least essentially independent of the pressure or the fluid velocity and / or is also fan-shaped in the event of a decrease in pressure or speed. fluid.

The direction of fluid flow is that direction which corresponds to the main swelling direction of the fluid in the channel of the nozzle arrangement. In this regard, any fluid turbulence and / or eddies can deviate from the flow direction or main widening direction, in particular be directed in the opposite direction to the main flow direction or widening direction of the fluid.

According to another aspect of the present invention, the second channel section is configured as a trapezoidal prime, preferably where the lateral surfaces are arranged at least essentially parallel to each other and / or are configured as the base surface of the trapezoidal prism. In this way corresponding advantages can be implemented. In particular, eventual flow losses in the channel are reduced.

Preferably, the dispensing head or nozzle arrangement is configured to generate an oblong or fan-like spray image and / or a flat or fan-like spray cloud, preferably where the droplet concentration decreases sideways - starting from the center of the spray image.

The dispensing head according to the invention for dispensing a fluid, in particular oil, has a housing part, a dispensing head driving part and a nozzle arrangement according to the invention for preferably fan-type atomization of the fluid, preferably where the dispensing head can be connected to a container associated, in particular a pressure container, with the fluid. In this way corresponding advantages can be implemented.

According to another aspect, the particularly cylindrical nozzle arrangement has - preferably from the front - a mounting profile or a mounting element, such as a projection and / or a depression, preferably where the nozzle arrangement can be connected in drag with a associated mounting device during or for mounting through the profile or mounting element and / or can be oriented in its rotational position relative to the housing part and / or drive part by means of the profile or mounting element.

In particular, the nozzle arrangement can be coupled - preferably frontally or axially - in drag with a mounting device, in order to set a desired rotational position of the nozzle arrangement. In this way a simple mounting and / or precise orientation of the nozzle arrangement is allowed or favored.

The use according to the invention envisages using a nozzle arrangement according to the invention for spraying, in particular of the fan type, a fluid, in particular an oil. In this way corresponding advantages can be implemented.

Other aspects, features and advantages of the present invention appear from the claims and the following description of preferred embodiments by means of the drawing. They show:

Figure 1: a schematic longitudinal section of a dispensing device with a dispensing head as proposed, as well as a nozzle arrangement as proposed according to a first embodiment; Figure 2: an enlarged representation of the nozzle arrangement in the dispensing head according to Figure 1; Figure 3: a perspective view of the nozzle arrangement;

Figure 4: a perspective view of the nozzle arrangement according to Figure 3 in longitudinal section;

Figure 5: a side view of the nozzle arrangement according to Figure 3 in longitudinal section;

Figure 6: a perspective view, rotated 90 ° with respect to Figure 3 of the nozzle arrangement;

Figure 7: a perspective view of the nozzle arrangement according to Figure 6 in longitudinal section;

Figure 8: a side view of the nozzle arrangement rotated 90 ° with respect to Figure 5 in longitudinal section; Figure 9: a schematic plan view of the nozzle arrangement;

Figure 10: a perspective view of a nozzle arrangement as proposed according to a second embodiment; and

Figure 11: a perspective view of the nozzle arrangement according to Figure 10 in longitudinal section.

In the only schematic figures, partially not to scale, the same references are used for equal parts or similar, where corresponding or comparable properties and advantages are achieved, also when a repeated description is omitted.

Figure 1 shows in a schematic longitudinal section a dispensing device 1 according to the one proposed according to a first embodiment.

The dispensing device 1 preferably has a dispensing head 2 for dispensing a fluid 3.

Preferably, the dispensing device 1 or the dispensing head 2 is configured for spray dispensing of the fluid 3. Especially preferably, the dispensing device 1 or the dispensing head 2 is configured to atomize the fluid 3 and / or form an aerosol.

The dispensing device 1 or the dispensing head 2 is preferably provided or connected or can be connected with a reservoir, in particular a container 4, for the fluid 3

The reservoir or container 4 is in particular part of the dispensing device 1 and / or is connected or can be connected with the dispensing head 2.

In the exemplary embodiment, the reservoir is preferably configured as a rigid container 4, in particular as a pressure container. The container 4 is preferably oblong, cylindrical and / or rigid - particularly preferably as a metal can or a glass container.

The fluid 3 in the reservoir can preferably be put under pressure or is under pressure. Preferably, container 4 or fluid 3 contains a suitable propellant, preferably a volatile and / or combustible propellant, compressed gas and / or carbon dioxide. However, the dispensing device 1 or the dispensing head 2 can also have or form a pump (not shown) or the like, which sucks or pumps the fluid 3 out of the container 4.

The container 4 preferably has - particularly preferably from the front - a dispensing valve 5.

Preferably, the dispensing head 2 is connected or can be connected (by fluid) with the dispensing valve 5.

The dispensing head 2 preferably has a housing part 6, preferably where the housing part 6 is connected or can be connected with the reservoir or container 4 in form, force and / or adhesion drag. In the illustrated embodiment, the dispensing head 2 is preferably clamped and / or retained in the container 4.

Preferably, the dispensing head 2 has a fixing part 7, preferably where the actuating part 7 can be pressed downwards or tilted or pivoted relative to the housing part 6 - in the representation according to FIG. 1 downwards.

Preferably, the drive part 7 is connected to the housing part 6 by means of a particularly elastically deformable connection. With particular preference, the housing part 6 and the drive part 7 are designed in one piece or as a single unit. However, other constructive solutions are also possible here.

The actuating part 7 preferably extends at least essentially - at least in the usual position of use - horizontally and / or starting from an edge of the housing part 6 towards the center and / or through the dispensing valve 5. From Especially preferred, the actuating part 7 forms an (axial) end of the dispensing device 1 or the dispensing head 2.

The dispensing head 2 or the actuating part 7 preferably has a connecting section 8, preferably where the connecting section 8 extends towards the dispensing valve 5 and / or is fluidly connected or connected to the dispensing valve 5.

Especially preferably, by actuating or pressing down the dispensing head 2 or actuating part 7, the connection section 8 can be moved or pressed down correspondingly, in particular in the direction of the dispensing valve 5, preferably to actuate or open the associated or fluidly connected dispensing valve 5. Figure 1 shows the non-actuated state of the dispensing device 1.

The dispensing device 1 or the dispensing head 2 preferably has an outlet space 9, preferably where the outlet space 9 serves to receive the fluid 3, which is dispensed upon actuation of the dispensing device 1 or the dispensing head. 2 through dispense valve 5 or flows out of container 4.

Preferably, the outlet space 9 is formed and / or limited laterally by the actuating part 7, in particular connection section 8.

Preferably, the outlet space 9 has a transport channel 9A and / or a connection channel 9B.

The transport channel 9A is preferably formed in and / or through the connecting section 8 and / or extends at least essentially vertically in the position of usual use.

The connection channel 9B preferably runs at least essentially transverse to the transport channel 9A and / or in the position of usual use at least essentially horizontally.

The dispensing device 1 or the dispensing head 2 preferably has a nozzle arrangement 10.

The nozzle arrangement 10 is preferably configured as a particularly interchangeable nozzle insert for the dispensing device 1 or the dispensing head 2.

The nozzle arrangement 10 is preferably connected or can be connected in form, force and / or adhesion with the housing part 6 and / or drive part 7.

Especially preferably, the dispensing device 1 or the dispensing head 2 has a receptacle 11 for the nozzle arrangement 10, preferably where the nozzle arrangement 10 can be inserted or is inserted and / or can be trapped or is trapped and / or can be or is at least partially, preferably completely, engaged in the receiving 11.

The receptacle 11 is preferably formed by the housing part 6 and / or drive part 7 or is integrated into this or these.

Preferably, the outlet space 9 is fluidly connected or connected with the receiver 11 and / or the nozzle arrangement 10. In particular, the connection channel 9B connects the transport channel 9A with the receiver 11 and / or the nozzle arrangement 10.

Preferably, the transport channel 9A is wider and / or longer than the connecting channel 9B.

Preferably, the width or diameter of the reception 11 is greater than the transport channel 9A and / or the connecting channel 9B.

The dispensing head 2, in particular the housing part 6 and / or drive part 7 and / or the nozzle arrangement 10, preferably is or is injection molded or made of plastic.

The nozzle arrangement 10 preferably forms a component group or a component which is inserted or can be inserted, in particular in a prefabricated manner, preferably at the receptacle 11. The nozzle arrangement 10 can be or is received particularly preferably or it can be clamped or it is clamped by hook or by retention by the reception 11.

Preferably, the nozzle arrangement 10 opens directly "into the open air". In particular, in the flow direction S of the fluid 3 no other component is connected with the nozzle arrangement 10.

Figure 2 shows in a fragmentary enlarged representation the dispensing head 2 with the nozzle arrangement 10 as proposed.

The nozzle arrangement 10 can be received or is received or it can be held or is preferably fully supported by the dispensing head 2, in particular the reception 11. Especially preferably the reception 11 is deep or long, so that the Nozzle arrangement 10 can be inserted or is inserted or is sunken or can be completely sunk in the reception 11.

In a particularly preferred manner, the nozzle arrangement 10 opens into a common plane with the housing part 6 and / or drive part 7. However, other solutions are also possible here, in particular in which the nozzle arrangement 10 protrudes outward or over the edge of the housing part 6 and / or drive part 7.

Figures 3 to Figure 9 show the nozzle arrangement 10 as proposed according to the first embodiment in different views.

The nozzle arrangement 10 is preferably configured at least essentially cylindrical or as a cylindrical body or as a cylinder. With particular preference, the outer surface 12 of the nozzle arrangement 10 is designed as a surrounding surface (of a cylinder). However, other solutions are also possible here. In particular, the nozzle arrangement 10 can also be configured as a prism or the like.

The nozzle arrangement 10 preferably has a width or a diameter of more than 2 mm, especially preferably more than 3 mm, in particular more than 4 mm, and / or less than 10 mm, especially preferably less than 8 mm. or 6 mm, in particular less than 5 mm.

The nozzle arrangement 10 preferably has a height or length of more than 2 mm, especially preferably more than 3 mm, and / or less than 10 mm or 8 mm, especially preferably less than 7 mm or 6 mm, in particular less than 5 mm.

Preferably, the nozzle arrangement 10, in particular the outer surface 12, has a preferably peripheral projection 13. Alternatively or additionally, the nozzle arrangement 10, in particular the outer surface 12, preferably has a particularly peripheral depression (not shown) .

Preferably, the dispensing head 2, in particular the receptacle 11, has a recess 14 or elevation (not shown) preferably complementary to the projection 13 or to the depression.

The nozzle arrangement 10 is connected or can be connected in particular by engaging the projection 13 in the recess 14 in positive and / or forcibly engaging manner with the housing part 6 and / or actuating part 7, in particular the receptacle 11 However, other solutions are also possible here. The nozzle arrangement 10 is preferably connected or can be connected - in particular by means of the projection 13 - with the housing part 6 and / or drive part 7, so that the latter is immobilized or can be immobilized in its rotary position , preferably at reception 11, in particular by form drag and / or force drag.

The nozzle arrangement 10 is preferably designed in a stepped manner or preferably has at least one step 15. In the illustrated embodiment, two opposing steps 15 are formed, preferably by two lateral recesses.

Preferably, the nozzle arrangement 10 has a base portion 16 and an upper portion 17.

Preferably, the base part 16 and / or the upper part 17 is (are) configured at least essentially cylindrical and / or cylinder-shaped.

Preferably, the upper part 17 is flatter and / or narrower than the base part 16. In particular, the width or the diameter of the upper part 17 is at least preferably smaller than the width or the diameter of the base part 16 In this manner, a simple manipulation or assembly of the nozzle arrangement 10 is permitted or favored.

Especially preferably, the upper part 17 is configured at least essentially as ashlar or of the ashlar type, preferably where two sides of the upper part 17 are curved and / or lie on the outer surface 12 of the base part 16.

The nozzle arrangement 10 has a flow channel or channel 18, in particular where the flow channel or channel 18 runs centrally, inside and / or along a spraying or longitudinal axis L of the nozzle arrangement. 10.

Channel 18 preferably extends both through base portion 16 and through top portion 17.

The nozzle arrangement 10 or the channel 18 preferably has an inlet opening 19 and an outlet opening 20. In particular, the channel 18 forms an inlet opening 19 and / or outlet opening 20, preferably where the inlet opening 19 it is arranged on the bottom side or on the base part 16 and the outlet opening 20 is arranged on the head side or on the top part 17.

Preferably, the inlet opening 19 is configured at least essentially circular and / or the outlet opening 20 at least essentially oblong or slit-like, as explained still more precisely below.

Preferably, the fluid 3 first passes through the inlet opening 19 or the base part 16 and then the outlet opening 20 or the upper part 17 in the case of actuation of the dispensing device 1 or dispensing head 2.

Channel 18 is divided into at least two sections. In this regard, channel 18 has a first channel section 21 and a second channel section 22.

In this regard, the first channel section 21 is fluidly connected to the second channel section 22, and namely through a through opening 23.

In this regard, the second channel section 22 connects with the first channel section 21 in the flow direction S of the fluid 3 and / or the fluid 3 first passes through the first channel section 21 and then the second channel section. channel 22 in the case of actuation of the dispensing device 1 or the dispensing head 2.

The first channel section 21 is preferably configured longer than the second channel section 22. However, other solutions are also possible here.

Preferably, the first channel section 22 has a length of more than 1 mm, especially preferably more than 2 mm, in particular more than 3 mm, and / or less than 10 mm or 8 mm, especially preferably less than 7 mm or 6 mm, in particular less than 5 mm or 4 mm.

Preferably, the second channel section 22 has a length of more than 0.1 mm, especially preferably more than 0.2 mm or 0.3 mm, in particular more than 0.4 mm or 0.5 mm, and / or less than 2 mm or 1.5 mm, especially preferably less than 1.2 mm or 1 mm, in particular less than 0.9 mm or 0.8 mm.

Preferably, the first channel section 21 is arranged - at least essentially completely - in the base portion 16 of the nozzle arrangement 10.

Preferably, the second channel section 22 is arranged - at least essentially completely - at the top 17 of the nozzle arrangement 10.

The first channel section 21 preferably has the inlet opening 19 and / or the shape.

The first channel section 21 narrows in the direction of flow S of fluid 3 or converges in the direction of flow S of fluid 3.

In this respect, the channel section 21 has an interior or flow cross section Q which decreases in the flow direction S, preferably where the flow cross section Q is first constant in the flow direction S and then decreases. .

The inner or flow cross section Q is preferably an inner or flow cross sectional area perpendicular to the longitudinal axis L or flow direction S of the channel 18 or a hydraulic cross section or a hydraulic cross section area, in particular the cross section interior or flow Q is the surface limited or enclosed by a lateral wall of the channel 18, in particular of the first channel section 21 and / or second channel section 22.

In this regard, the first channel section 21 narrows in the flow direction S of the slit-type fluid 3 and / or forming an oblong or slit-type flow cross-section Q.

In particular, the smallest flow cross-section Q of the first channel section 21 is configured at least essentially slit-like or rectangular in shape.

Preferably, the first channel section 21 has two lateral surfaces or lateral slopes 24 inclined relative to each other or with respect to the flow direction S or longitudinal axis L, preferably where the lateral slopes 24 are inclined so that the first channel section 21 narrows slit-like or forming an oblong or slit-type flow cross section.

Preferably, the side slopes 24 are respectively smooth or flat. However, other solutions are also possible here, in particular in which the lateral slopes 24 are curved. In an alternative embodiment (not shown), the first channel section 21 is preferably conical and / or the first channel section 21 tapers conically.

In this regard, the first channel section 21 is configured, in particular narrowed, so that a fluid 3 flowing into the nozzle arrangement 10 is compressed and / or accelerated in the first channel section 21.

Preferably, the (maximum) width or (maximum) diameter of the inlet opening 19 or of the largest flow cross-section Q of the first channel section 21 is more than 1 mm, especially preferably more than 1, 2 mm, in particular more than 1.4 mm, and / or less than 3 mm, especially preferably less than 2.5 mm, in particular less than 2 mm.

Preferably, the lateral slopes 24 of the first channel section 21 are inclined by more than 5 °, especially preferably more than 10 °, in particular more than 15 °, and / or less than 45 °, especially preferably less 30 °, in particular less than 20 °, with respect to the flow direction S or longitudinal axis L of the nozzle arrangement 10.

As already mentioned at the outset, the first channel section 21 and the second channel section 22 are fluidly connected to each other through a passage opening 23.

The through opening 23 is preferably rectangular, in particular square, and / or has the smallest flow cross-section S in the channel 18. However, other solutions are possible here, in particular in which the opening through 23 is at least essentially circular or oval in shape. In this way, possible flow losses can be reduced.

The passage opening 23 is preferably smaller than the flow cross section Q adjacent the passage opening 23, preferably of the slit type, of the first channel section 21.

Especially preferably, the flow cross section Q is suddenly reduced in the flow direction S at the end of the first channel section 21.

The second channel section 22 is of an oblong or slit-like cross-sectional configuration.

Preferably, the second channel section 22 opens directly to the open air and / or a front surface 25 of the nozzle arrangement 10 or of the upper part 17.

In a particularly preferred manner, the second channel section 22 is designed as an oblong depression or groove and / or recessed in the nozzle arrangement 10, in particular the upper part 17. This enables a particularly simple and / or economical manufacture of the nozzle arrangement. nozzle 10.

Preferably, the (maximum) longitudinal extension of the second channel section 22 transversely to the longitudinal axis L or flow direction S or the (maximum) length of the largest flow cross section Q of the second channel section 22 or the width ( maximum) or the (maximum) diameter of the outlet opening 20 is greater than the length or depth of the second channel section 22 along the flow direction S or longitudinal axis L. However, other solutions, in particular in which the second channel section 22 is oblong shaped or the longitudinal (maximum) extension of the second channel section 22 transversely to the longitudinal axis L or direction of flow S is less than its length or depth at along flow direction S.

The second channel section 22 preferably has a length or depth along the flow direction S or the longitudinal axis L of more than 0.1 mm or 0.2 mm, especially preferably more than 0.3 mm or 0.4 mm, in particular more than 0.5 mm or 0.6 mm, and / or less than 10 mm or 6 mm, especially preferably less than 5 mm or 3 mm, in particular less than 2 mm or 1 mm.

Preferably, the second channel section 22 has the outlet opening 20 or the shape, preferably where the outlet opening 20 is located on the front surface 25 of the nozzle opening 10.

Preferably, the second channel section 22 widens in the flow direction S of fluid 3 or the second channel section 22 diverges in the flow direction S of fluid 3.

Preferably, the largest flow cross section Q of the second channel section 22 corresponds to the outlet opening 20.

Preferably, the longitudinal extent or length of the greatest flow cross section Q of the second channel section 22 or the (maximum) width of the outlet opening 20 is more than 1 mm, especially preferably more than 1.5 mm, in particular more than 2 mm and / or less than 8 mm, especially preferably less than 6 mm or 4 mm, in particular less than 3.5 mm or 3 mm.

The second channel section 22 has two oblong side surfaces 26 and two short leg surfaces 27 and / or is bounded by two oblong side surfaces 26 and two short leg surfaces 27.

Preferably, the area of the lateral surfaces 26 corresponds to a multiple of the area of the arm surfaces 27, in particular at least 1.5 times or 2 times.

Preferably, the lateral surfaces 26 of the second channel section 22 run at least essentially parallel to each other and / or to the flow direction S or the longitudinal axis L. However, other solutions are also possible here, in particular in those that the lateral surfaces 26 are inclined relative to each other and / or with respect to the direction of flow S or longitudinal axis L.

The arm surfaces 27 of the second channel section 22 are inclined with respect to the flow direction S or longitudinal axis L, preferably such that the flow section Q of the second channel section 22 widens in the flow direction S of fluid 3 - preferably continuously, permanently and / or linearly.

Preferably, the leg surfaces 27 are inclined such that the side surfaces 26 are (respectively) in the shape of a trapezoid and / or the second channel section 22 is configured as a trapezoidal prism.

Preferably, the side surfaces 26 and / or leg surfaces 27 are configured (respectively) flat. In particular, the second channel section 22 is configured without steps. Alternatively, the side surfaces 26 and / or leg surfaces 27 may be curved or bent.

Preferably, the leg surfaces 27 are inclined respectively by more than 10 °, especially preferably more than 20 °, in particular more than 30 °, and / or less than 80 ° or 70 °, especially preferably less than 60 °. °, in particular less than 50 °, with respect to the flow direction S or longitudinal axis L of the nozzle arrangement 10.

Especially preferably, the leg surfaces 27 are inclined with respect to the direction of flow S or longitudinal axis L more strongly than the lateral slopes 24 of the first section 21 with respect to the direction of flow S or longitudinal axis L. In this way a slow compression or acceleration and a rapid distension or braking of the fluid 3 in channel 18 is possible or favored, so that a good atomization can also be obtained in the event of a drop in fluid pressure or velocity drop 3.

Preferably, the side surfaces 26 and / or leg surfaces 27 are spaced relative to the through opening 23 and / or the second channel section 22 presents a bottom surface 28, preferably where the bottom surface 28 connects laterally with the through opening 23 and / or is arranged between through opening 23 and side surfaces 26 and / or leg surface 27.

Preferably, bottom surface 28 is disposed at least essentially parallel to front surface 25 of nozzle arrangement 10 and / or transversely to flow direction S.

Preferably, the flow cross section Q increases sharply in the flow direction S, starting from the passage opening 23.

As illustrated in particular by FIGS. 3, FIG. 6 and FIG. 9, the channel sections 21,22 are arranged rotated relative to one another, in particular at least essentially 90 °.

In this regard, the longitudinal extent of the flow cross section Q of the first channel section 21 smaller or adjacent to the second channel section 22 is arranged transversely or at least essentially orthogonal to the longitudinal extent of the flow cross section Q of the second smaller channel section 22 or adjacent to the first channel section 21.

In this regard, the slit-like shaped flow cross sections Q through the channel sections 21, 22 are arranged in a plan view of the cross-type nozzle arrangement 10 one above the other or rotated 90 ° relative to each other, as illustrated in particular in Figure 9.

Preferably, the first channel section 21 and the second channel section 22 intersect or partially overlap. Especially preferably, the first channel section 21 extends through the base portion 16 to the top portion 17.

In particular, the bottom surface 28 of the second channel section 22 projects laterally from the lateral slopes 24 of the first channel section 21, as illustrated in particular in Figure 8.

Preferably, an offset is present between the bottom surface 28 of the second channel section 22 and the top surface 29 of the first channel section 21. In particular, the bottom surface 28 or the plane of the second channel section 22 fixed by the bottom surface 28 is arranged upstream to the upper surface 29 or the plane of the first channel section 21 fixed by the upper surface 29 .

In a particularly preferred manner, the through opening 23 extends both transversely and also at least essentially parallel to the flow direction S and / or the through opening 23 is (also) configured in the flow direction S.

In the embodiment shown, the nozzle arrangement 10 preferably has a peripheral recess 30, preferably where the recess 30 is arranged in the base part 16. In this way, material can be saved during the production of the nozzle arrangement 10.

Preferably, the nozzle arrangement 10 can be aligned during or for mounting of the dispensing device 1 or the dispensing head 2 in its rotatable position, preferably such that the generated aerosol exhibits the desired orientation or alignment.

Especially preferably, the nozzle arrangement 10 is aligned or can be aligned so that the main widening plane of the generated aerosol is arranged transversely or at least essentially orthogonal to a longitudinal axis of the dispensing device 1 or the longitudinal axis of the Dispensing device 1 runs within or at least essentially parallel to the main widening plane of the generated aerosol.

Preferably, the nozzle device 10 has - in particular in addition to the second channel section 22 - a mounting profile or a mounting element 31 and / or forms it. Preferably, the nozzle arrangement 10 can be aligned by means of the mounting profile 31 and a mounting device (not shown), such as a tool, with respect to the housing part 6 or drive part 7.

In particular, the nozzle arrangement 10 is connected or can be connected or is coupled or is draggable with a mounting device by means of mounting profile 31.

Very particularly preferably, the nozzle arrangement 10 can both be aligned by means of a mounting device, and it can also be inserted or inserted into the dispensing device 1 or the dispensing head 2, in particular the receiving 11. From This advantageously simplifies the assembly of the dispensing device 1 or the dispensing head 2.

Preferably, the nozzle arrangement 10 or the mounting profile 31 has at least one mounting surface 32 or the shape, preferably where the mounting surface 32 is arranged at least essentially straight or flat and / or offset or spaced relative to the longitudinal axis L.

Preferably, the nozzle arrangement 10 or the mounting profile 31 has or forms several mounting surfaces 32, preferably at least essentially in parallel.

Preferably, the nozzle arrangement 10 can be gripped and / or rotated on the mounting surface 32. Especially preferably, a mounting device can be engaged against the mounting surface 32, preferably to transmit a torque on the arrangement nozzle 10 and / or rotate nozzle arrangement 10 about longitudinal axis L.

The mounting profile 31 is preferably arranged or formed frontally and / or on or at the top 17 of the nozzle arrangement 10.

In the first embodiment (Figure 1 to Figure 9), the mounting profile 31 is preferably configured as a depression or step 15 and / or is formed by an (axial) recess in the upper part 17 of the nozzle arrangement 10.

Additionally or alternatively, the profile or mounting element 31 is configured as a projection or rib (axial), as illustrated by the second embodiment of the nozzle arrangement 10 represented in Figure 10 and Figure 11.

In the second embodiment, the mounting profile 31 is preferably formed by at least one, here two, projections or mounting elements 31 preferably axial and / or spaced from one another, in particular frontally and / or on or at the top 17.

In particular, the mounting profile 31 is designed as a slot or as a slot and / or for coupling with a slot-shaped mounting device.

Preferably, the nozzle arrangement 10 and a mounting device can preferably be connected or coupled to one another in a positive manner by axial relative movement to each other or a movement in the direction of the longitudinal axis L, preferably such that the mounting device It engages at least partially - preferably axially or frontally - in the nozzle arrangement 10 or the mounting profile 31 and / or rests on the mounting surface 32.

The mounting surface 32 or the plane formed by the mounting surface 32 is preferably arranged at least essentially parallel and / or spaced with respect to the channel 18 or second channel section 22, in particular the side surfaces 26 or the planes formed by the side surfaces 26.

In a particularly preferred manner, the channel 18 or the second channel section 22 is arranged between two mounting planes 32. In this way, an impairment of the spray image due to the mounting profile 31 is prevented or minimized.

The mounting profile 31 is preferably greater, in particular longer, than the outlet opening 20 or the longitudinal extent of the outlet opening 20.

In particular, the mounting surface 32 or the surface content of the mounting surface 32 is greater than one of the side surfaces 26 or the surface content of one of the side surfaces 26. This simplifies the handling of the nozzle arrangement 10 during assembly.

Preferably, the mounting profile 31 is formed additionally to or independently of the second channel section 22 in the nozzle arrangement 10. Advantageously, damage to the channel 18, in particular the second channel section 22, is thus prevented in the case of nozzle arrangement alignment 10.

In an alternative embodiment (not shown), the channel 18, in particular the second channel section 22, forms the mounting profile 31 and / or the side surfaces 26 are configured as mounting surfaces 32.

As already explained at the outset, with the nozzle arrangement 10 as proposed it is also possible to obtain an at least essentially homogeneous, uniform, symmetrical, fan-like image of spray and / or of equal width in the case of pressure drop of fluid 3 or container 4. In particular, the nozzle arrangement 10 reduces flow losses.

Preferably, a spray image generated by means of the nozzle arrangement 10 (not shown) exhibits in the case of a distance between the spray image or the nozzle arrangement 10 or outlet opening 20 of at least essentially 150 mm, with a temperature of fluid 3 of at least essentially 21 ° C and with a viscosity of fluid 3 of at least essentially 0.82 dPas a width of more than 160 mm, in particular more than 170 mm, with a container pressure of at least essentially 1.0 MPa, a width of more than 140 mm, in particular 150 mm, with a vessel pressure of at least essentially 0.8 MPa and a width of more than 100 mm, in particular 110 mm or 120 mm, with a vessel pressure of at least essentially 0.6 MPa or 0.4 MPa.

Preferably, the dispensed mass of the fluid 3 in a predefined dispensing time depends linearly on the pressure of the fluid 3 or of the container 4, at least in the pressure range of 1 MPa to 0.4 MPa.

Preferably, the mass of the fluid 3 dispensed during a dispensing time of 10 seconds is 26 g with a container pressure of 1 MPa, 23 g with a container pressure of 0.8 MPa, 20 g with a container pressure of 0.6 MPa and 18 g with a container pressure of 0.4 MPa, in particular where the temperature of fluid 3 is at least essentially 21 ° C and the viscosity of fluid 3 at least essentially 0.82 dPas.

List of references;

Claims (11)

1. Nozzle arrangement (10) for preferably fan-type atomization of a fluid (3), in particular oil, where the nozzle arrangement (10) has a channel (18) for the fluid (3), where the channel (18) has a first channel section (21) and a second channel section (22) that connects with the first channel section (21) in the flow direction (S) of the fluid (3), where the first channel section (21) converges in the direction of flow (S) of the fluid (3), where it narrows in the direction of flow (S) of the fluid (3) of the slit type or forming a flow cross section oblong (Q), where the second channel section (22) is shaped oblong or slit-like in cross section and is bounded by two oblong side surfaces (26) and two short leg surfaces (27), where the leg surfaces (27) are inclined with respect to the flow direction (S) or a longitudinal axis (L) of the channel (18), characterized by what the longitudinal extent of the flow cross section (Q) of the first channel section (21) smaller or adjacent to the second channel section (22) is arranged transversely to the longitudinal extent of the flow cross section (Q) of the second smaller channel section (22) or adjacent to the first channel section (21). Nozzle arrangement according to claim 1, characterized in that the leg surfaces (27) are inclined so that the second channel section (22) diverges in the flow direction (S). Nozzle arrangement according to claim 1 or 2, characterized in that the first channel section (21) has two lateral slopes (24) inclined to each other in the direction of flow (S) of the fluid (3). Nozzle arrangement according to any one of the preceding claims, characterized in that the second channel section (22) is configured as a trapezoidal prism, where the side surfaces (26) are arranged at least essentially parallel to each other. Nozzle arrangement according to any one of the preceding claims, characterized in that the first channel section (21) is fluidly connected to the second channel section (22) through a passage opening (23), preferably where the through opening (23) is rectangular, in particular square, and / or has the smallest flow cross-section (Q) in the channel (18). Nozzle arrangement according to claim 5, characterized in that the leg surfaces (27) and / or side surfaces (26) are spaced relative to the through opening (23). Nozzle arrangement according to any of the preceding claims, characterized in that the flow cross section (Q) decreases sharply in the flow direction (S) at the end of the first channel section (21) and / or increases sharply in the flow direction (S) at the beginning of the second channel section (22). Nozzle arrangement according to any of the preceding claims, characterized in that the second channel section (22) preferably opens directly into the open air and / or on a front surface (25) of the nozzle arrangement (10) and / or It is configured without steps. Nozzle arrangement according to any one of the preceding claims, characterized in that the nozzle arrangement (10) is configured as a preferably interchangeable nozzle insert for a dispensing head (2). 10. Dispensing head (2) for dispensing a fluid (3) in particular oil, where the dispensing head (2) has a housing part (6), a drive part (7) for driving the dispensing head (2) and a nozzle arrangement (10) for preferably fan-type atomization of the fluid (3), where the dispensing head (2) can be connected with an associated container (4) with the fluid (3), characterized in that The nozzle arrangement (10) is configured according to any one of the preceding claims. 11. Use of a nozzle arrangement (10) according to any one of claims 1 to 9 for the particular fan-type atomization of a fluid (3), in particular an oil.